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Questions tagged [libroscpp]

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noetic createTimer always segfault

Hi, After introducing ROS to my program with success, i wanted to use it more and added timer. I am using the same code on both Ubuntu20/noetic and Ubuntu18/melodic without any issue. But with timer i ...
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´libroscpp.so: cannot open shared object file: No such file or directory´ Error

I have a Turtlebot3 WIth ROS Kinetic and Linux 16.04 Everything was working fine until i had trouble installing a python bluetooth library. when the library finally worked it broke ROS. (Atleast i ...
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1 answer
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rosout high memory usage

I'm running melodic on a ubuntu 18.04 container (through systemd-nspawn inside Archlinux: ...
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1 answer
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cannot find libroscpp.so if installed node started as root

Hello, I have a node that I am supposed to start as root. Before I was using catkin_make to compile and I was sourcing devel/setup.bash and everything was working ...
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1 answer
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Thread Scheduling in ROS

Dear All, Anybody had an idea about thread scheduling in ROS? Suppose I have a node which spawns multiple threads. How ROS handle scheduling of these user defined threads? Can anybody spread some ...
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1 answer
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building roscpp

All I need is roscpp libs for Android. I'm hoping there's a way I can build just these by themselves. So without knowing much about cmake, I did ... ...
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1 answer
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topic is already advertised as md5sum [...] and datatype [...]

I'm trying to get output from a remote node to the /rosout topic and view it with 'rostopic echo rosout' running on the master. I have a roscore running on hostA brought up by starting roslaunch. On ...
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1 answer
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missing symbol from libroscpp.so?

Hello there, I built a ROS package in Ubuntu 14.04 LTS and ROS Indigo and now I test these executables that I built in different Linux and ROS distributions. Giving an example, when I setup a VM with ...
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2 answers
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Can"t find libroscpp.so fedora 21

Hello all ! Might be good information to know that I'm using the repo for here to try Ros on Fedora 21. All was working fine before today when I tried roscore and I was hit with this error on start-up ...
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1 answer
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Can't run or compile anything !!!! -> symbol lookup error: /opt/ros/hydro/lib/libroscpp.so: undefined symbol: _ZN3ros6HeaderC1Ev

it appears that there is an unknown symbol in the libroscpp.so file, and now catkin can find anything in /opt/ros/hydro/lib/ ...
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1 answer
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Problem of running "rosrun turtlesim turtlesim_node"

Hey guys, I am new to ros and try to learn it by going through the beginner tutorial. However, when I tried typing the code "rosrun turtlesim turtlesim_node" provided in "...
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1 answer
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Programmatically get node's Namespace

Is there a way to get a node's current namespace? Say I launch a node like this ...
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1 answer
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ROS Microcontroller cpp support?

In this momment I only know a cpp API for Arduino/AVR. Do you know other existing cases? It is planned to support more microcontrollers? Originally posted by Pablo Iñigo Blasco on ROS Answers with ...
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Subscriber::shutdown() required to be called manually on destruction?

TL;DR Is calling Subscriber::shutdown() explicitly required to prevent callbacks from being called after object destruction? TS;DU (too short, didn't understand) I've recently been doing some work ...
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1 answer
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Linker Error in simple program in Groovy

Hello, everyone, I'm having some trouble in the linking step of my program after running rosmake. My program has a dependency in one other package, though I'm pretty sure that this console output isn'...
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